Paragraph 2
A low
of reactivity to oxygen is called chemical nobility. Gold is the most noble
. It is also one of the
metals, which means it can easily be hammered into thin
. Gold can be beaten to a
of less than 0.1 micrometres. This is one hundred times thinner than a
hair. Its purity is why we have used gold for
and currency for more than 5,000 years. It is also used in electronics, dentistry,
technology, and medicine. The
believe gold will continue to be a
part of many industrial applications.
